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Synthesis and optical properties of copper oxide nanoparticles: effect of solvents
Journal of Nanophotonics ( IF 1.5 ) Pub Date : 2020-11-20 , DOI: 10.1117/1.jnp.14.046010
Ningappa C. Horti 1 , Mallappa D. Kamatagi 1 , Ninganagouda R. Patil 2 , Madivalagouda S. Sannaikar 3 , Sanjeev R. Inamdar 3
Affiliation  

Abstract. Nanocrystalline copper oxide (CuO) powder was synthesized through solid-state co-precipitation technique using copper sulfate pentahydrate and sodium hydroxide pellets as a source materials. Crystalline nature and surface morphology of the sample are studied through x-ray diffraction, field emission scanning electron microscopy, energy dispersive x-ray, and Fourier transform infrared spectroscopy. Optical properties of synthesized CuO nanopowder were investigated by UV–Vis absorption and photoluminescence spectroscopy. X-ray diffraction study reveals that CuO nanoparticles are in monoclinic structure and crystalline size is found to be around 15 nm as estimated from Debye-Scherrer formula. FESEM measurement confirms that the particles are in almost irregular shape, and some nanorod-like structures are noticed. FTIR spectrum confirms the formation of high-quality and pure CuO nanoparticles. The effect of various solvents on optical properties of CuO nanoparticles is studied. From UV–Vis absorption measurement, a strong quantization along with varying band edges in different solvents was observed. It is seen from photoluminescence spectra that the intensity of emission as well as emission peak wavelength changes with solvents.

中文翻译:

氧化铜纳米粒子的合成和光学性质:溶剂的影响

摘要。以五水硫酸铜和氢氧化钠颗粒为原料,通过固态共沉淀技术合成纳米晶氧化铜 (CuO) 粉末。通过 X 射线衍射、场发射扫描电子显微镜、能量色散 X 射线和傅里叶变换红外光谱研究样品的结晶性质和表面形貌。通过紫外-可见吸收和光致发光光谱研究合成的 CuO 纳米粉末的光学性质。X 射线衍射研究表明,CuO 纳米颗粒呈单斜晶结构,根据 Debye-Scherrer 公式估计,发现晶体尺寸约为 15 nm。FESEM 测量证实颗粒几乎呈不规则形状,并注意到一些纳米棒状结构。FTIR 光谱证实了高质量和纯 CuO 纳米粒子的形成。研究了各种溶剂对CuO纳米粒子光学性能的影响。从 UV-Vis 吸收测量中,观察到强量化以及不同溶剂中不同的带边。从光致发光光谱可以看出,发射强度和发射峰波长随溶剂而变化。
更新日期:2020-11-20
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